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Old 01-14-2013, 11:44 AM
Cultr Cultr is offline
Officially Welcomed to the 'Fest
Location: Cali
Join Date: Jan 2010
Posts: 126
Mein Auto: E92 335i
Originally Posted by hondo402000 View Post
the information posted could be correct, as I have had my 07-335 for only a few months, but seems odd to me that as smart as this car is that it cannot tell when the battery is fully charged? Most all new cars the Alternator has a regulator inside and sends a charge to the battery when it needs it and quits sending a charge when its fully charged.

If I had to replace my battery, I was going to hook a spare battery to the terminal under the hood to the plus and the negative to a ground and then replace the batter so I wouldnt loose all the presets in my car

tell me thats wrong?

So at the point in time when you plug in the new battery you will have two batteries hooked up to the car simultaneously?
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